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Developer Resources

 Welcome to the Treasury's developer page. 

​​Discover and explore Treasury data sets on data.gov, the centralized platform to find open data from federal agencies. Our open data catalog is also available in machine readable format at www.treasury.gov/data.json, which uses the common core metadata schema for federal agency open data listings.

If you have questions about the dataset, please send an email to contact listed in the metadata for the dataset or digital@treasury.gov. Please include the name of the dataset and publishing entity information in your email.

Here are some of the datasets that are available:

Specially Designated Nationals List (SDN)

OFAC SDN List and XSD​​

As part of its enforcement efforts, Office of Foreign Assets Control (OFAC) publishes a list of individuals and companies owned or controlled by, or acting for or on behalf of, targeted countries. It also lists individuals, groups, and entities, such as terrorists and narcotics traffickers designated under programs that are not country-specific. Collectively, such individuals and companies are called "Specially Designated Nationals" or "SDNs." Their assets are blocked and U.S. persons are generally prohibited from dealing with them. Click here for more information on Treasury's Sanctions Programs. 

Auction Schedule of US Treasury Securities

Debt  Auction Schedule (​XML)​ and XSD

Treasury sells bills, notes, bonds, FRNs, and TIPS at regularly scheduled auctions. The schedule of Treasury securities auctions is released at the Treasury's Quarterly Refunding press conference, usually held on the first Wednesday of February, May, August, and November.​

You can also use Auction Query​ to download data in CSV, JSON, TSV or XML format.

​Daily Treasury Yield Curve Rates

Treasury Daily Yield Curve API and XSD

This curve, which relates the yield on a security to its time to maturity is based on the closing market bid yields on actively traded Treasury securities in the over-the-counter market. These market yields are calculated from composites of quotations obtained by the Federal Reserve Bank of New York. For information on how the Treasury’s yield curve is derived, visit our Treasury Yield Curve Methodology page​

​​Also available through Federal Reserve System (H.15) & FRED.

Daily Treasury Bill Rates​

Treasury Bill Rates API​ and XSD​

These rates are composites of closing market bid quotations on recently issued Treasury Bills in the over-the-counter market as obtained by the Federal Reserve Bank of New York at approximately 3:30 PM each business day.​

​​Also available through Federal Reserve System (H.15) & FRED

United States Mint Product Information Updates

Product Information Updates

This lists United States Mint's products and their descriptions.  

Tax Preparation Software Developers

IRS requires all tax preparation software used for preparing electronic returns to pass the requirements for Modernized e-File Assurance Testing (ATS). The Modernized e-File (MeF) User Guides & Publications provides general information and technical guidance for Electronic Return Originators, Software Developers and Transmitters who participate in Modernized e-File (MeF).

The 94x XML Developers Forum provides information and technical guidance for software developers who are interested in developing software for the Employment Tax e-file System in XML​.


Last Updated: 8/29/2014 3:17 PM